Tire-building core.



P. & B. DE lxfmnf.` -TIRE BUILDING CURE.

APPLISATQON FILED APR. 25. 1911.

Fammi Dee. 4,1917.

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Specification ci Letters atcnt.

I Application filed April 25, 191'?. Serial Nc. teli-,395.

To all whom z't may concern.'

Be it known that we, `PETER DE Mama and BARTHOLD DE MAmA,'both citizens of the United States, and -residents of Clifton,

Tire-Building Core, of which the following is a full, clear, and exact description.

-Among the principalgobjects which the present invention has in View are: to lock the separable sections of a core of the chanA acter described in alinement; to reduce the time factor required for setting up a core; and to simplify the operation of setting up and knocking down said core.

Drawings.

Figure 1 is a side View of a core of the character mentioned having applied thereto an alining ring and lock therefor constructed and arranged m accordance with the present invention;

Fig. 2 is a cross section on an enlarged scale, the section being taken as on the line 2-2 in Fig. 1'; Fig. 3 is a similar section, the section being taken as on the line 3*?) in Fig. 1;

Fig. 4 is a detail view showing two end fragments of a locking ring employed in the present invention. Y

' Description.

As seen in the drawings, the core coin-l y section 9, two, lateral sections 10, and a key y l1 has wedge-shaped ends flared toward the center of the core. After a tire has been cured on the core formed by the sections 9,

a solid ring 12 is provided. The ring 10 and 1,1, the is to facilitate said core is removed and it this operation that the key section 11 is so shaped that it may be drawn out of the tire through the inner annular gap thereof. 'It is obvious that when the key section 11 is removed, the lateral sections 10 andthe body section 9 may be quickly taken from the interior of the tire.

To aline the various sections and avoid creasing or ridgin'g the interiorfof this tlire, 2 as an annular groove 13 providedlto hold the flanges 14 on the various sections 9, l0 and,

11. When the said sections are properly assembled, the flanges 14 form a co tinuous annular flange to accurately t the ,groove 13. The flanges 14 are slightly shaped in cross section, and the sides of 1n the county of Pass'alc and State of New, Jersey, have invented a new and lmproved section 11.' The key section wedge groove 13 are correspendingly pitched. tdjacent the entrance te the.grooye and at the inner'edge thereof the ring? chanfered to :torni an inclined enriace The surface 15 operates as a guide over which the edges of the llanges are forced when obtaining access to 'the groeve 13.

The inner wall of tl e outer' flange l@ ci' the ring 12 is inclined with the outer wallet the flanges le, to in: the limits of the outer extension. cui each of the sections 9, l@ and. 1.1..

To receive the ianee 16 df the ring l2, the necks 17 with which the'seetiens 9, l0 and l1 are provided, have each a groove 18. At the opening side oif'the groeve 18, a slightly overhanging flange 19 is termed fer holding in service a locking ring 20. Between theV inner edge of the :liangesl of the core sections and the oppcsite ot 'the groeves 18., suiiieient room is prcvic'ed for the passage of the 16 ot ring 12.

-iVhcn the ring l2 is eet, the haelt @l of the flange 16 is separated from the inner face Se Opemen. 9 G When constructed and arranged in accor/i 'ance with the present invention, cere sections 9, l() and' ll are assembled to Aceive the ring l2. The ring 12 is posed on the necks 1.'.7, chainiered surface 95 15 of the said ring' 'resting on the inner e; o l

cere sec-tiens the is edges of the tlanges le. The being properly supported then 'tani'ped or otherwise :'ferced 'te ice position where the groove 13 said if the inner edges of the nanges aliued, the operation oi the chemie? face 15 will move them inte aliner.- on the other hand, any cit the sectien extended outward, the inclination o outer surface 01' the groove ll cgerat the cuter surface of the flanges lll wil a' the said core sections backward inte alinenient. l i Thering is 'thus iiirced h ring 20 can pass between the l 1n correspondence 20. To this end, a suitable tool is disposed.

behind the lug 22 and the end of the ring 20 adjacent thereto is withdrawn from .between the flanges 1G and 19. After the ring 20 is removed, it is obvious thatl it is a simple matter .to remove the ring 12 from engagement with the sections 9, 10 and 11. This is accomplished most readily by driving the ring from engagement with the groove 18, the striking surface 24 being provided therefor.

Ulaims.

l. A tire building core comprising a plurality of core sections, each provided with a setting flange, said flanges beingtapered in cross section; a continuous alining ring having a continuous annular groove, said groove being shaped in correspondence with said flanges; and means for holding said ring and said flanges in service relation, said means embodying a flange disposed in spaced relation to the back of said ring in service, and a wedging member adapted to rest between said flange and the back of said ring.

2. A tire building core comprising a plurality of core sections, each provided with a setting flange, said flanges being tapered in cross section; a continuous alining ring having a continuous annular groove, said groove being shaped in correspondence with said flanges; and means for holding said ring and said flanges in service relation, said means embodying a plurality of overhangsetting flange, said flanges being tapered in 6o ving members, one formed on each of lsaid sections, said members being disposed iii spaced relation to said ring when in service, and a split ring adapted for disposition between said members and said alining ring.

3. A tire building core comprising a plurality of core sections, each provided with a cross section; a continuous alining ring having a continuous annular groove, said groove being shaped in correspondence with said flanges; means for holding said ring and said flanges in service relation, said means embodying a plurality of overhanging members, one formed on each of said sections, said members being disposed in spaced relation to said ring when in service, and a split ringadapted for disposition between said members and said alining ring; and means for at will removing said split ring, said means embodying a Wedging lug formed at the end of said spring for the dislodgment thereof from between said overhanging members and said alining ring.

t. A tire building core comprising a plurality of core sections having inwardly'extending necks, said necks being provided with tapered groove sections, said groove Y sections being adapted for alinernent for forming a continuous circular groove; a rigid ring shaped in cross .section in correspondence with said sections, said ring ernbodying a chamfered surface adjacent the 8G edge thereof for assembling said core sections, said chamfered surface being adjacent a striking surface formed on said ring; a-series of overhanging members, one on each of said sections, said overhanging mem- 85 bers being disposed adjacent the open edge of the grooves in said sections; and an expansible locking ring adapted for insertion between said rigid ring and said members for holding said rigid ring in service rela- SC' tion to said core sections.

PETER DE MATTIA. VBARTHOLD DE MATTIA. 

